/**
* Helios, OpenSource Monitoring
* Brought to you by the Helios Development Group
*
* Copyright 2007, Helios Development Group and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*
*/
package org.helios.netty.examples.state;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.ChannelHandler.Sharable;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelLocal;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.DownstreamMessageEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
import org.jboss.netty.channel.socket.SocketChannel;
/**
* <p>Title: StringReporter</p>
* <p>Description: An upstream channel handler that expects Strings as messages and returns the length of the string</p>
* <p>Company: Helios Development Group LLC</p>
* @author Whitehead (nwhitehead AT heliosdev DOT org)
* <p><code>org.helios.netty.examples.state.StringReporter</code></p>
*/
@Sharable
public class StringReporter extends SimpleChannelUpstreamHandler {
/** Channel local field to hold the number of times the current channel's frame decoder was called */
public static final ChannelLocal<Integer> frameDecodeCalls = new ChannelLocal<Integer>(true);
/**
* {@inheritDoc}
* @see org.jboss.netty.channel.SimpleChannelUpstreamHandler#messageReceived(org.jboss.netty.channel.ChannelHandlerContext, org.jboss.netty.channel.MessageEvent)
*/
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
Object msg = e.getMessage();
if(msg instanceof String) {
int[] ret = new int[3];
ret[0] = ((String)msg).length();
ret[1] = frameDecodeCalls.get(e.getChannel());
ret[2] = ((SocketChannel)e.getChannel()).getConfig().getReceiveBufferSize();
// =====================================================================
// Uncomment next section to ditch the CompatibleObjectEncoder from the pipeline
// =====================================================================
// ChannelBuffer intBuffer = ChannelBuffers.buffer(12);
// for(int i = 0; i < 3; i++) {
// intBuffer.writeInt(ret[i]);
// }
// ctx.sendDownstream(new DownstreamMessageEvent(e.getChannel(), Channels.future(e.getChannel()), intBuffer, e.getChannel().getRemoteAddress()));
// =====================================================================
// =====================================================================
// Comment the next line to ditch the CompatibleObjectEncoder from the pipeline
// =====================================================================
ctx.sendDownstream(new DownstreamMessageEvent(e.getChannel(), Channels.future(e.getChannel()), ret, e.getChannel().getRemoteAddress()));
} else {
System.err.println("WTF..... anything getting here should be a string but we got a [" + msg.getClass().getName() + "]");
}
super.messageReceived(ctx, e);
}
}